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/* aKode: Encoder abstract-type
Copyright (C) 2004 Allan Sandfeld Jensen <kde@carewolf.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef _AKODE_ENCODER_H
#define _AKODE_ENCODER_H
#include "pluginhandler.h"
#include "sink.h"
namespace aKode {
class File;
//! A generic interface for all encoders
/*!
* Encoders are specialized sinks that can write to files. Be aware that encoders in aKode 1.0
* cannot handle tags. So the files should be tagged with TagLib after encoding.
*/
class Encoder : public Sink {
public:
/*!
* Returns the current position in file/stream in milliseconds.
* Notice that this position is not the necessarely the same as the
* the one in the incoming stream.
* Returns -1 if the position is unknown.
*/
virtual long position() = 0;
/*!
* Returns true if the encoder has encountered a non-recoverable error
*/
virtual bool error() = 0;
};
/*!
* Parent class for encoder plugins
*/
class EncoderPlugin {
public:
/*!
* Asks the plugin to open a Encoder that writes to the file \a dst
*/
virtual Encoder* openEncoder(File *dst) = 0;
};
/*!
* Handler for encoder-plugins.
*/
class EncoderPluginHandler : public PluginHandler, public EncoderPlugin {
public:
EncoderPluginHandler() : encoder_plugin(0) {};
EncoderPluginHandler(const string name);
Encoder* openEncoder(File *dst);
/*!
* Loads a encoder-plugin by the \a name (flac, vorbis, lame..)
*/
virtual bool load(const string name);
bool isLoaded() { return encoder_plugin != 0; };
protected:
EncoderPlugin* encoder_plugin;
};
} // namespace
#endif
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